Saturn's moon Tethys suggesting a vast underground ocean.

Key points:

• A recent study published in Nature suggests the presence of a large, young ocean beneath Mimas' icy surface.
• This discovery was made by analyzing subtle wobbles in Mimas' orbit and rotation, indicating internal processes that could only be explained by a liquid layer.
• The ocean is estimated to be 20-30 kilometers deep and cover almost half of Mimas' volume.
• The study suggests the ocean formed relatively recently, between 25 and 2 million years ago.

This finding adds Mimas to the growing list of icy moons in our solar system with potential subsurface oceans, like Jupiter's Europa and Saturn's Enceladus, raising the possibility of habitable environments beyond Earth.

Additional Information:

• Include sources for your article, such as the Nature study and news articles reporting on the discovery.
• You can mention Tethys briefly, stating that while it's another intriguing moon of Saturn, Mimas is currently in the spotlight for its potential ocean.
• Consider the implications of this discovery for future space exploration and the search for extraterrestrial life.